CN104389667B - A kind of automobile exhaust pipe device of noise reduction - Google Patents
A kind of automobile exhaust pipe device of noise reduction Download PDFInfo
- Publication number
- CN104389667B CN104389667B CN201410691608.3A CN201410691608A CN104389667B CN 104389667 B CN104389667 B CN 104389667B CN 201410691608 A CN201410691608 A CN 201410691608A CN 104389667 B CN104389667 B CN 104389667B
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- Prior art keywords
- thin
- inner bag
- walled inner
- cylinder
- walled
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- 230000003584 silencer Effects 0.000 claims abstract description 22
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 4
- 239000010935 stainless steel Substances 0.000 claims abstract description 4
- 238000005192 partition Methods 0.000 claims description 4
- 239000007789 gas Substances 0.000 description 16
- 230000000694 effects Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 238000013475 authorization Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000030279 gene silencing Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
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- Exhaust Silencers (AREA)
Abstract
The invention discloses a kind of automobile exhaust pipe device of noise reduction, including cylinder, top connection, lower contact, Inlet muffler, outlet noise silencer and thin-walled inner bag, the Inlet muffler is penetrated in cylinder by top connection entrance, outlet noise silencer is penetrated in cylinder by lower contact entrance, inner barrel has shifted to install thin-walled inner bag successively, and thin-walled inner bag is connected by dividing plate with cylinder respectively.The present invention while cylinder inboard wall is provided with projection, effectively changes the motion of air-flow, reaches good noise reduction by shifting to install thin-walled inner bag in cylinder；Acoustic wave filter structure is provided at both ends with simultaneously, decrease of noise functions is further enhanced；Thin-walled inner bag uses stainless steel, can extend the service life of blast pipe.
Description
Technical field
The present invention relates to a kind of automobile exhaust pipe device of noise reduction, belong to technical field of automobile accessories.
Background technology
The discharge duct of automobile is one of noise main source of vehicle all the time.Its noise is general by high velocity air stream
Produced by dynamic unstability, the characteristics of air-flow of flowing has high temperature, high pressure, high speed, its noise intensity discharged is high, frequency spectrum
It is wide and to involve scope wide, have a strong impact on healthy and resident the production and living of driver and passenger.
Authorization Notice No. is a kind of automobile exhaust pipe for noise reduction that the U of CN 202673424 are announced, and it is provided with thin-walled inner bag
And muffler, play certain noise reduction, but quantity because of its thin-walled inner bag and position set improper so that automobile exhaust
Pipe does not reach the optimal effect of noise reduction.A kind of vapour simple in construction, with good denoising structure and service life length is provided
Vehicle exhaust device turns into the focus studied in the industry.
The content of the invention
The technical problem to be solved in the present invention is：Overcome the deficiencies in the prior art there is provided one kind it is simple in construction, with good
The exhaust system of denoising structure and service life length.
The purpose of the present invention is achieved through the following technical solutions：
A kind of automobile exhaust pipe device of noise reduction, including cylinder 9, top connection 3, lower contact 14, Inlet muffler 1, outlet
Silencer 16 and the spherical thin-walled inner bag of semicircle, the Inlet muffler 1 are penetrated in cylinder 9 by the entrance of top connection 3, outlet silencing
Device 16 is penetrated in cylinder 9 by the entrance of lower contact 14, shifts to install two or more thin-walled inner bag, thin-walled inner bag inside cylinder 9 successively
It is fixed on by dividing plate inside cylinder 9.
Above-mentioned thin-walled inner bag includes the first thin-walled inner bag 6, the second thin-walled inner bag 10 and the 3rd thin-walled inner bag 11, the dividing plate
Including the first dividing plate 5, the dividing plate 12 of second partition 8 and the 3rd.
Foregoing the first thin-walled inner bag 6, the second thin-walled inner bag 10 and the spherical convex surface direction of the 3rd thin-walled inner bag 11 is cylinder 9
Radial direction, spherical convex surface is in face of airintake direction.
The spacing of foregoing second thin-walled inner bag 10 and the first thin-walled inner bag 6 is more than in the 3rd thin-walled inner bag 11 and the second thin-walled
The spacing of courage 10.
Said inlet silencer 1 and outlet noise silencer 16, which stretch into the equal arranged distribution in the part of cylinder 9, silencer aperture 4.
Projection 7 is provided with the foregoing inwall of cylinder 9.
Foregoing thin-walled inner bag is made of stainless steel.
Beneficial effects of the present invention：
Compared with prior art, the present invention in cylinder by setting multiple thin-walled inner bags, and it divides blast pipe with dividing plate
For chamber structure, the principle that large space is divided into multiple small space reduction gas velocities is effectively utilized；Thin-walled inner bag it is spherical
Convex surface direction is the radial direction of cylinder, and spherical convex surface plays thin-walled inner bag low speed in face of airintake direction, very well and led to slowly, fast at a high speed
Logical effect；Shifted to install between thin-walled inner bag, the gas in blast pipe can be made to change direction repeatedly, at the same ensure low speed or
Can smooth in exhaust during high speed；Cylinder inboard wall is provided with projection, effectively changes the motion of air-flow.Structure in summary,
Make the decrease of noise functions that blast pipe is good.Silencer is provided at both ends with simultaneously, decrease of noise functions is further enhanced.Thin-walled inner bag is used
Stainless steel, can extend the service life of blast pipe.
Brief description of the drawings：
Fig. 1 is schematic structural view of the invention；
Fig. 2 is Fig. 1 along E-E line left views；
Description of reference numerals：
1st, Inlet muffler；2nd, entrance puigging；3rd, top connection；4th, silencer aperture；5th, the first dividing plate；6th, the first thin-walled
Inner bag；7th, projection；8th, second partition；9th, cylinder；10th, the second thin-walled inner bag；11st, the 3rd thin-walled inner bag；12nd, the 3rd dividing plate；13、
4th chamber；14th, lower contact；15th, puigging is exported；16th, outlet noise silencer；17th, through hole.
Embodiment：
Embodiments of the invention：As shown in Figure 1 and Figure 2, the automobile exhaust pipe device of a kind of noise reduction, including cylinder 9, on connect
First 3, lower contact 14, Inlet muffler 1 and outlet noise silencer 16, the Inlet muffler 1 penetrate cylinder 9 by the entrance of top connection 3
Interior, outlet noise silencer 16 is penetrated in cylinder 9 by the entrance of lower contact 14, and Inlet muffler 1 loads cylinder 9 with outlet noise silencer 16
Part, which is provided with silencer aperture 4, the inwall of cylinder 9, is provided with projection 7.
The first thin-walled inner bag 6, the second thin-walled inner bag 10 and the 3rd thin-walled inner bag have been shifted to install inside the cylinder 9 successively
11, be connected respectively by the first dividing plate 5, the dividing plate 12 of second partition 8 and the 3rd with cylinder 9, from front to back by 9 points of cylinder be A, B,
Tetra- chambers of C, D.
Described top connection 3 and lower contact 14 and cylinder 9 are detachable, can be connected with mode connects for screw or lockable mechanism.
Described Inlet muffler 1 and the gap entrance puigging 2 of top connection 3 are sealed, and outlet noise silencer 16 connects with
First 14 gap outlet puigging 15 is sealed.
Operation principle of the present invention is：Hemispherical thin-walled inner bag has at different speeds, and throughput is different, and gas low speed leads to
Out-of-date, gas disperses at a slow speed to pass through along hemisphere；Gas at a high speed by when, gas is quickly collided at the top of hemisphere, while unsanctioned
Gas along hemisphere face down through.It can reach low speed slowly to lead to, the effect soon led at a high speed.
Gas enters noise-reducing exhaust pipe A chambers from Inlet muffler 1, and silencer aperture 4 is conducive to sound wave in porous material
Hole in friction and change into thermal energy consumption and dissipate, make to weaken by the sound wave of blast pipe, gas is of short duration in A chambers to be present
Afterwards, gas adjustment direction is divided into multiply sprout through hemispherical first thin-walled inner bag 6 arrival B chambers, and unsmooth along cylinder 9
Inwall flowing, a part of acoustic energy rubs in the hole of porous material and changes into thermal energy consumption and dissipate, make by blast pipe
Sound wave weakens, and gas velocity is reduced again, reduces noise.
Second thin-walled inner bag 10 and the set location sequence of the first thin-walled inner bag 6, change greatly airflow direction, gas side
To the multiple deflecting in design structure, noise can be largely reduced；3rd thin-walled inner bag 11 and the second thin-walled inner bag 10, it is wrong
Position is smaller, it is ensured that can smooth in exhaust during low high speed.
Gas passes through C chambers, reaches D chambers, and waste gas is finally discharged through outlet noise silencer 16.The tube wall of outlet noise silencer 16 is arranged
Column distribution has silencer aperture 4, is conducive to making again weakening by the sound wave of blast pipe, finally make gas with minimum sound from
Begin to rehearse tracheae.
The present embodiment makes whole blast pipe be divided into four relatively small skies using three thin-walled inner bags, three thin-walled inner bags
Between, while making gas have five larger direction changes, it is ensured that noise reduction is good；Using two or a thin-walled inner bag, institute's shape
Into space number it is few and each space is larger, gas turns are less, it is impossible to ensure noise reduction；Using four and more than four
Though thin-walled inner bag noise reduction it is good, exhaust resistance is added, so should not set.
Claims (4)
1. a kind of automobile exhaust pipe device of noise reduction, including cylinder（9）, top connection（3）, lower contact（14）, Inlet muffler
（1）, outlet noise silencer（16）The thin-walled inner bag spherical with semicircle, it is characterised in that：The Inlet muffler（1）By top connection
（3）Entrance penetrates cylinder（9）It is interior, outlet noise silencer（16）By lower contact（14）Entrance penetrates cylinder（9）It is interior, cylinder（9）It is internal
Two or more thin-walled inner bag is shifted to install successively, and thin-walled inner bag is fixed on cylinder by dividing plate（9）Inside, in cylinder（9）Inwall
On be provided with projection（7）；The thin-walled inner bag includes the first thin-walled inner bag（6）, the second thin-walled inner bag（10）In the 3rd thin-walled
Courage（11）, the dividing plate include the first dividing plate（5）, second partition（8）With the 3rd dividing plate（12）；The first described thin-walled inner bag
（6）, the second thin-walled inner bag（10）With the 3rd thin-walled inner bag（11）Spherical convex surface direction is cylinder（9）Radial direction, spherical male
Face is in face of airintake direction.
2. a kind of automobile exhaust pipe device of noise reduction according to claim 1, it is characterised in that：The second thin-walled inner bag
（10）With the first thin-walled inner bag（6）Spacing be more than the 3rd thin-walled inner bag（11）With the second thin-walled inner bag（10）Spacing.
3. a kind of automobile exhaust pipe device of noise reduction according to claim 1, it is characterised in that：The Inlet muffler
（1）And outlet noise silencer（16）Stretch into cylinder（9）Part arranged distribution has silencer aperture（4）.
4. a kind of automobile exhaust pipe device of noise reduction according to claim 1, it is characterised in that：Described thin-walled inner bag is adopted
It is made of stainless steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410691608.3A CN104389667B (en) | 2014-11-27 | 2014-11-27 | A kind of automobile exhaust pipe device of noise reduction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410691608.3A CN104389667B (en) | 2014-11-27 | 2014-11-27 | A kind of automobile exhaust pipe device of noise reduction |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104389667A CN104389667A (en) | 2015-03-04 |
| CN104389667B true CN104389667B (en) | 2017-08-01 |
Family
ID=52607616
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410691608.3A Expired - Fee Related CN104389667B (en) | 2014-11-27 | 2014-11-27 | A kind of automobile exhaust pipe device of noise reduction |
Country Status (1)
| Country | Link |
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| CN (1) | CN104389667B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105118494A (en) * | 2015-07-20 | 2015-12-02 | 天津市九方煤矿机械制造有限公司 | Silencing device |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2093905U (en) * | 1991-07-09 | 1992-01-22 | 张文宗 | Automotive exhaust cleaning, spark-extinguishing and silencing apparatus |
| JP2005146852A (en) * | 2003-11-11 | 2005-06-09 | Komatsu Ltd | Exhaust muffler |
| CN101285411A (en) * | 2008-05-16 | 2008-10-15 | 许坚强 | Silencing device |
| CN201277080Y (en) * | 2008-10-20 | 2009-07-22 | 姜志明 | Automobile exhaust pipe |
| CN102359407A (en) * | 2011-10-29 | 2012-02-22 | 无锡开普机械有限公司 | Multi-cavity labyrinth silencer |
| CN202673424U (en) * | 2012-02-16 | 2013-01-16 | 奉化市科锐汽车部件有限公司 | Noise-reduction automobile exhaust pipe |
| CN204239040U (en) * | 2014-11-27 | 2015-04-01 | 贵州大学 | A kind of automobile exhaust pipe device of noise reduction |
-
2014
- 2014-11-27 CN CN201410691608.3A patent/CN104389667B/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN104389667A (en) | 2015-03-04 |
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Effective date of registration: 20201202 Address after: Su Ji Zhen Meng Lou Cun Xi, Cao County, Heze City, Shandong Province Patentee after: Caoxian Kaidi Wood Products Co.,Ltd. Address before: 550025 Guizhou, Guizhou University, Huaxi, north campus, science and Technology Department Patentee before: Guizhou University |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170801 |
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